85989712 has 20 divisors (see below), whose sum is σ = 167456916. Its totient is φ = 42775040.

The previous prime is 85989707. The next prime is 85989713. The reversal of 85989712 is 21798958.

It can be written as a sum of positive squares in 2 ways, for example, as 77369616 + 8620096 = 8796^2 + 2936^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85989713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10489 + ... + 16792.

Almost surely, 2^85989712 is an apocalyptic number.

It is an amenable number.

85989712 is a deficient number, since it is larger than the sum of its proper divisors (81467204).

85989712 is a wasteful number, since it uses less digits than its factorization.

85989712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27486 (or 27480 counting only the distinct ones).

The product of its digits is 362880, while the sum is 49.

The square root of 85989712 is about 9273.0637871202. The cubic root of 85989712 is about 441.3828942698.

The spelling of 85989712 in words is "eighty-five million, nine hundred eighty-nine thousand, seven hundred twelve".